Appraisal of water matrix on the removal of fungicide residues by heterogeneous photocatalytic treatment using UV-LED lamp as light source

被引：9
作者：
Aliste, Marina [1 ]
Garrido, Isabel [1 ]
Perez-Lucas, Gabriel [2 ]
Flores, Pilar [1 ]
Hellin, Pilar [1 ]
Navarro, Simon [2 ]
Fenoll, Jose [1 ]
机构：
[1] Murcia Inst Agrifood Res & Dev, Sustainabil & Qual Grp Fniit & Vegetable Prod, C Mayor S-N, Murcia 30150, Spain
[2] Univ Murcia, Fac Chem, Dept Agr Chem Geol & Pedol, Campus Univ Espinardo, Murcia 30100, Spain
来源：
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH | 2021年 / 28卷 / 19期
关键词：
Triazole and carboxamide pesticides; Photocatalytic degradation; Aqueous matrices; UV-LED lamp; TiO2; Na2S2O8; ZnO; ACTIVATED PERSULFATE; ORGANIC POLLUTANTS; WASTE-WATER; DEGRADATION; OXIDATION; CONTAMINANTS; PESTICIDES; DISINFECTION; FUNDAMENTALS; OXIDES;
D O I：
10.1007/s11356-020-11560-y
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
In this study, the photocatalytic degradation of four fungicides, myclobutanil, penconazole and difenoconazole (triazole compounds) and boscalid (carboxamide), has been examined in different aqueous matrices (tap water, irrigation water and two WWPT effluents). Experiments were conducted at laboratory scale with different reagents-zinc oxide (ZnO), titanium dioxide (TiO2), sodium persulphate (Na2S2O8) and the combined systems ZnO/Na2S2O8 and TiO2/Na2S2O8-in water exposed to UV-LED irradiation. Previously, the effect of catalyst and oxidant loading on the disappearance kinetics of the different fungicides was assessed to know maximum degradation efficiency. The influence of water matrices and pesticide loading in removal effectiveness has been evaluated. It was observed a greater efficiency in processes conducted using the tandems ZnO/Na2S2O8 and TiO2/Na2S2O8 in irrigation and tap waters. Results showed that UV-LED are a suitable alternative for tackling the removal of organic pollutants in water.
引用
收藏
页码：23849 / 23858
页数：10
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